215852801 has 2 divisors, whose sum is σ = 215852802. Its totient is φ = 215852800.

The previous prime is 215852759. The next prime is 215852821. The reversal of 215852801 is 108258512.

It is a happy number.

215852801 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 210946576 + 4906225 = 14524^2 + 2215^2 .

It is a cyclic number.

It is not a de Polignac number, because 215852801 - 2¹⁴ = 215836417 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (215852821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107926400 + 107926401.

It is an arithmetic number, because the mean of its divisors is an integer number (107926401).

Almost surely, 2^215852801 is an apocalyptic number.

It is an amenable number.

215852801 is a deficient number, since it is larger than the sum of its proper divisors (1).

215852801 is an equidigital number, since it uses as much as digits as its factorization.

215852801 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6400, while the sum is 32.

The square root of 215852801 is about 14691.9297915556. The cubic root of 215852801 is about 599.8636736572.

The spelling of 215852801 in words is "two hundred fifteen million, eight hundred fifty-two thousand, eight hundred one".